I agree, not sure why they don't post this info. But yes, the routes can always change and you'll probably have one person following their GPS and go off the trail...
For those looking, here is some route info. These are only rough guidelines so do not use for actual navigation and the route could change on the day so follow the route markers.
15km
30km
45km
70km
Edit: If anyone needs Strava routes let me know.
